Fine tune your Ender 3 V3 SE - eliminate stringing!

Pro tips to fine tune your Creality Ender-3 V3 SE and eliminate stringing! Get your Ender-3 V3 SE here:
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[@PaymaanJafari]

I have a SE, for about 2 or 3 months. I didn't have such stringings, but I immediately updated the firmware first thing. Also I leveled the bed as accurately as I could, by touching screws so every number be green at least. also sanded one or 2 of plastic bushings for this. My accelerations are stlll 4000, But software fixes those I guess. My tips to correct all of those you mentioned: 1- Use only CrealityPrint, not the modified Cura. I have also recently used OrcaSlicer and it works too, a good option as none of PrusaSlicer and else have included SE yet. 2- A retraction of 0.8 works on most PLA, I actually don't touch defaults unless I have a Filament with another temp or need supports and infill. 3- About zits and blobs. While everyone accuses "memory savings" and "recovery after poweloss" and they are somehow right, it is Creality's fault. I had such problems and noticed smething another KZbinr mentioned. The SDCard Creality includded in the package is all the problem. It is a very low quality memory and low speed. After lots of problems with blobs and artifacts on the prints, I had it and inserted my highspeed SDCard from my Drone, a Samsung EVO, and I absolutely don't have any single zits anymore. SE processor has the capability to read and write fast to SDCard, but the included SD is so low quality it destroys prints. Just my 2 cents.

[@donisio8697]

Whats wrong with cura?

[@PaymaanJafari]

@@donisio8697 Cura, OrcaSlicer, both can print on v3SE now, specially the recent version of Cura, and they have features I really like, but stringing remains. Creality Print does not make stringings possibly because of finer settings. But it does not have many of features others have.

[@chasepeterson930]

I am new to 3d printing and I got a v3 se. I get the SD card is terrible but would I still be able to print some things on it? If you have any recommendations on an upgraded SD card that would be appreciated.

[@PaymaanJafari]

@@chasepeterson930 The provided SD and even the reader are trouble, I used my Drone's EVO SD card first to prove zits and blobs are memory problems, and then used a 6 year old but fast 16GB card as my regular. Any average SD does far better than the provided one.

[@pavlovskyyp8799]

@@PaymaanJafari what about printing from usb? I also have issues with the provided SD card

[@gmdward]

I never leave comments. You made my day. Just getting into 3D printing and was frustrated with stringy messes so quickly. This taught me a lot.

[@ThatGunGuyy]

just bought me se, is this a common issue ?

[@JPAnor]

just bought one, very stringy. But still pretty good print@@ThatGunGuyy

[@slavsquad1389]

@@ThatGunGuyy yes

[@SteveRand]

I levelled mine and have been printing for a month or so with no issues with the factory settings. Very impressive that it's so easy and seemless!

[@cybergnetwork588]

I've been troubleshooting my KE's for 2 days and I was about to return those to Amazon. Tried everything possible including your very helpful tutorial. It was still stringing like no tomorrow. Just for those that can't figure it out (and hopefully it might help someone), change the nozzle for a new one!!! I am not even kidding! Because of the slight nozzle dragging on the prints (and infills), the nozzle diameter was not 0.4mm anymore. So, because it was a tiny bit larger, there was a tiny excess of filament coming out of the nozzle which created the stringing. In addition, give it something like 0.2mm Z hop and disable Reduce infill retraction to increase the nozzle lifespan. Now, I am feeling soooo good! Those new V3s are such nice 3D printers.

[@traywayle]

gonna try this when i get home later :D

[@grubfriend]

Just got the V3 SE as my first printer and I thought I was going crazy when it was ignoring the Cura settings. Thank you so much!

[@MrHobj34]

Ke only $100 more

[@SupremeCakeVR]

@@MrHobj34the KE is good, but it’s still 1.5x the price

[@Abaddon231]

I followed these steps after leveling and it was a godsend .. No more stringing , and no more bad prints .. Thanks so much!

[@joeylandes4181]

I've commented on very few YT vids, this may be my first one in years. But I cannot explain the frustration this has ended for me. Coupled with some of the other comments about getting a higher bandwidth SD card, this is game changing for my prints. Instant subscribe. My effing hero.

[@Tombof3DPrintedHorrors]

I'm glad it helped! :)

[@xxCusco]

Holy smokes! I wish I had found this video sooner. I've spent every waking minute of the last seven days trying to think of a solution and this completely fixed my issues. You da man!

[@Tombof3DPrintedHorrors]

Glad it helped you :)

[@oavalos6702]

Just wanted to say thank you from the bottom of my heart. I got my daughter this printer for Christmas and I’ve been determined to make it work. You saved me hours of frustration. ❤️❤️❤️

[@Tombof3DPrintedHorrors]

I am so glad it helped you! :)

[@USAMAGAMINGYT-br2yi]

Absolutely my new workhorse of choice in the print farm! BTW only the Z axis is screw driven, those are linear rods on the Y axis, belt driven. But the way they oriented the x axis stepper is absolutely genius.

[@paulienet]

I have used your profile for years.... promote it ALL THE TIME.....😀😀😀

[@Tombof3DPrintedHorrors]

Thank you :)

[@alternativemummy9769]

Thank you so much for this! There are so few troubleshooting videos for the v3 SE as its so new. This is so helpful for us newbies who got it as their first printer ❤

[@jeremiahbenson1198]

Just got my SE and I think this will fix the issues Im having. Your stock ender 3 guide saved my bacon several times. Thanks!

[@thehobbist5544]

did it work?

[@mpPrajapati-bk8qu]

I ran the calibration from the print menu but no other adjustments. And I have to say I’m very impressed so far! It’s a great little budget machine.

[@Tombof3DPrintedHorrors]

Agreed!

[@user-el1pn7bk5d]

I cannot believe how much better my print was after watching this video! You are a saint!

[@linkthelegend01]

I have had no problems with my Ender 3 V3 SE weirdly. When I got my Ender 3 Pro a few years ago, I had nothing but problems, I've been very impressed with the Ender 3 V3 SE and it has been printing perfect prints right out of the box. I do have some minor stringing issues, so this will hopefully help with that!

[@Hy6oTpax]

hi, I solved the problem with threads

[@TheImprovisations]

So, what are the values on your printer for the settings mentioned in this video?

[@Scott-hh3gh]

I viewed your video early this morning, changed the printer settings to what you recommended, and ran my first ever 3D test print of the cat and it came out great! No issues whatsoever. Thanks for the tips.

[@andriis2547]

Thank you for the tutorial. My printer was basically jumping at stock settings, but those values fixed the problem.

[@nostalgiainjection8867]

mine shakes alot at stock settings. i even printed the gantry supports

[@slabbertjohan]

Got mine today, tonight we play ! ~ South Africa

[@dnappi85]

Hey. Just wanted to say THANKS! your old video helped me set up my Ender 3 A few months ago and i have been down the rabbit hole of 3d printing world ever since. I feel like I'm years behind everyone else but I'm learning alot FAST! But just wanted to say thanks. I think that video saved me hours of troubleshooting things later.

[@pravinchoudhary3165]

Thanks to your video, now I can use my machine better. Before adjusting, I felt that Ender 3 V3 SE was very easy to use and a very good entry-level printer.

[@Tombof3DPrintedHorrors]

Thanks for watching! :)

[@samserious1337]

Thanks for the tuning parameters, will test this as soon my printer arrives. This is a huge time saver for beginners!

[@jr10]

Awesome video. I just purchased my first printer which happens to be this one. I am obviously having typical newbie problems and videos like this are a godsend. Thank you for taking the time. Subbed.

[@MrHobj34]

you should return it if you have time and get the v3 ke

[@truszko91]

how has it been?? I just got mine, also first-timer. Do you like it?

[@jr10]

I love mine. There was obviously, a learning curve, but in the end, the most important factor would getting the correct temperatures for the extruder, and the bed temperature. I am now experimenting with PLA silk which is supposed to be even more frustrating but I am doing pretty good with it.@@truszko91

[@nebufabu]

FWIW, I bought a 3V3 SE a few weeks ago and the factory settings were 5000/5000/200/5000 for acceleration and 500/500/10/50 for max speed. So, this is still relevant.

[@EduardoAmarante_]

same here

[@navigator6974]

This is gold! I am getting my first Ender 3 V3 SE this week and I already found your great info! Thanks for this! Cant wait to start printing terrain :)

[@BStreet666]

Really on the fence about getting the KE version. Video instructions like this are super helpful as stringing has been a huge challenge for me since the beginning days of printing.

[@jaredhalt4181]

Please don't feel like you have to run the printer at 500 acceleration. You can comfortably go up to 1800-2400 depending on the print. 500 is very slow for this printer.

[@scf1776]

Question. Which or all (XYZE) acceleration setting are you referring to exactly. Sorry to sound silly. 🙂

[@dejmyan5443]

@@scf1776 i wonder about that too

[@kleber1983]

Please don´t let us in the dark...thx lol

[@_DROM_]

What about ringing with all that acceleration?

[@vhsdvdmanaus]

Yes. I agree with you. It would be like turning off the turbo on a Ferrari

[@DEREKFUMI]

Another great and detail video. Just ordered my V3 SE yesterday and can’t wait to see how it works. Been in love with my V2 Neo so far too. Thanks again for sharing these vids to help us newbies out.

[@truszko91]

How has the printer been for you? I just ordered mine, my first printer, idk what to expect 😂

[@collectingretrotech]

just got a Creality Ender V3 SE for my birthday last week and found your channel at the same time : ) absolutely awesome content and a great channel, I am learning quite a lot from you, thank you. keep it up : )

[@Tombof3DPrintedHorrors]

Thanks! :)

[@oninestudy6147]

Same, I also just got mine and printed out of the box. Came out perfect!

[@joshbowman4060]

Well it fixed mine mostly. I printed a small parts tray and it looked like it had cobwebs on it. I did as you said and printed another and only had a couple of strings. thanks so much for the time you took to fix and film this.

[@Crob0506]

Thank you very much. More V3 SE videos will be much appreciated, as I have just recently finished building mine and am a complete beginner. Of course I'm going to be waiting some weeks for 0.2mm nozzles to come in, but that's alright as I know it will be worth the wait. Again thank you for these videos.

[@Nabro86]

I got one some days ago. I was blown away by the easiness of the setup and the results of the first prints. For the slicer, there is an existing profile for the SE, and from what I see, it does pretty well the job. I notice that this is indeed a 0.4 mm nozzle, going to a 0.2 mm will allow you to get more accuracy? For smaller details?

[@Win52D]

I found the Ender 3 V3 SE profile on the Creality Slicer v4.8.2 291 and exported it out. A year ago KZbinr Ricky Impey did a vid on the steps you need to take to make this happen.

[@alexlex6977]

Thanks for the advice I had the latest version of Creality Print 4.3 installed It was not possible to transfer the profile to Cura with it It differs in folder structure from Creality Slicer Without uninstalling Creality Print installed Creality Slicer 4.8.2 Everything worked out according to Ricky Impey's instructions

[@alexlex6977]

I noticed that some values ​​in the Creality Print profile differ from Creality Slicer Ender-3 V3 SE Creality Print Travel speed 150 Travel accelerator 2500 Ender-3 V3 SE Creality Slicer Travel speed 250 Travel accelerator 500 Tell me what values ​​did you choose?

[@Win52D]

@@alexlex6977 I am new to 3D Printing and trying to learn so I mostly just play with settings and see how they work. Currently I have Travel Speed set to 500. Travel Acceleration is deselected. When selected though it was set to 4000. I went thru the same steps you did with Creality Print and Slicer.

[@meliraptor]

The tips with the settings on the Ender was great! definitely improved the situation! After seeing that these settings had a huge impact I went ahead and also enabled the Acceleration and Jerk control in Cura, together with the tweaking of the retraction settings this definitely fixed the issue!

[@Lil_Aly951]

So when you say enabled, do you mean you put so the machine accelerates and jerks during printing? Sorry I'm new lol just wondering as I have the same printer.

[@dustin89clanton]

These tips are always appreciated, even if I don’t have the newer model Ender it’s a possible solution for V2 settings causing stringing.

[@firefighterforlife6673]

Thank you so much been having some issues and now I can’t wait to try this fixes

[@steprockmedia]

Printer arriving today! I'll take a look at what it's doing out of the box then see if I need to come back to your setup. Very helpful stuff. Thank you.

[@yakindex]

These 3D printed pieces are absolutely stunning! 😍

[@bubbleman91]

Man finally i know why i get blops with the beginning of every layer

[@danielfoley1312]

THANK YOU!!! like others have mentioned, you saved me sooo much time. Just got my Ender 3 V3 SE and anything including the test print was printing slanted. Made these changes and viola, perfect print now. YoU Da MaN GrUnClE sTaN.

[@Tombof3DPrintedHorrors]

Glad it helped you! I should have another V3 Se video with even better settings out in March :)

[@joshuabianchi3212]

Hey @@Tombof3DPrintedHorrors appreciate the video. Is the follow up V3 Se video still planned for this month? :)

[@Tombof3DPrintedHorrors]

@@joshuabianchi3212 nope, haven't had time. Hopefully soon :)

[@joshuabianchi3212]

@@Tombof3DPrintedHorrors all good, thanks

[@edwardbrooks1134]

So strange. Mine needed small adjustments but I didn’t have to change any of those settings and my prints look fantastic!! Also this thing is so fast!! Love it compared to my old ender 3.

[@julianmiles6604]

My Ender 3 V3 SE had Max acceleration set to 500/500/100/5000 and Max speed set to 500/500/10/50. Anyway I went and changed my settings as recommended then printed some small TPU tubes for use as equipment feet. The result was much worse stringing than the default settings that my machine previously had.

[@ShelleyFarrell-e2r]

Thank you so much I was so stuck ready to take it back you solved the issues thanks

[@cheeseprincess647]

Watching this in preperation for getting my v3 SE tuesday 😂 i figure ill be less frustrated if i know what to do immediately

[@Tombof3DPrintedHorrors]

I hope it helps :)

[@vednoval5426]

Really love Creality user community, everyone here is so nice~

[@BoWhitten]

Thanks for the info. You are always helping the community!

[@Tombof3DPrintedHorrors]

Thanks for watching! :)

[@dailyprofitcenter]

Just got mine. Thank you for this. Its baffling somw of the decisions Creality makes.

[@aryananiknam4817]

bro i learnt more in 12min than all the 3d printing guides i saw combined.

[@i23dyeoj]

thanks! this is my first 3D printer. these videos are really helping. the user guide provided was lacking for sure

[@probirsingh7010]

It appears pretty similar to the V2, with the addition of auto leveling, a direct drive extruder, and quoted typical print speed of 180mm/s for only $10 more.

[@hendernater]

You have been so helpful with my 3d printing journey.

[@browncanesugar]

Thank you so much for talking to me on my level lol. Newbie here and your explanations are very easy to follow.

[@Tombof3DPrintedHorrors]

Glad it helped you :)

[@flari8048]

I’m verrrrry intrigued by the V3 SE, looks to be quite the value

[@Tombof3DPrintedHorrors]

For $200-220 it's the best value out there for what you get :)

[@ttt-123-ttt]

Thanks a lot. This fixed all of my issues with my new ender v3 SE

[@dollymakercreativity3544]

I hope to try this out tomorrow, thanks for taking the time to make this video.

[@thereisonlye6632]

THANK YOU SOOOO MUCH, I've spent multiple days trying to fix this

[@jeffluke2232]

Thank you so much I was printing just fine then things started to go very wacky this helped a ton.

[@garage6300]

Thanks. I made all changes you recommended. Now the printer is running smooth. And the quality has improved a lot. Keep up your good job charring problems and solutions for these printers.

[@Tombof3DPrintedHorrors]

Glad it helped you :)

[@gs_invader7364]

I just did setings u recommended and it is now so much quieter especiali when moving in y direction. But my printed pretty well with default. Its just so much quieter and smother when it moves 👍😀. Also I recommend raising z offset just a bit it really improve quality i raised it by 0.03 from -2.53 to -2.56

[@Tombof3DPrintedHorrors]

Going from -2.53 to -2.56 lowered the nozzle (you are going down when it is a negative number, so the greater the number the lower the nozzle is/closer to the print bed). To raise it with a negative number you need to decrease the number, so -2.53 would become -2.50 to raise the nozzle. :)

[@thetopcat84]

Found that this helped improve quality, particularly on the smaller details, but didn't do much for stringing, ironically... testing temps and retraction next!

[@user-mx2mw6vo7i]

any results?

[@Argyll9846]

I don't have a 3D printer and I'm in the process of investigating the options available including viewing videos such as yours to determine the pros and cons when making a purchase. Your video was very interesting and I would think it would be very helpful to anybody with a 3d printer who is experiencing similar problems. I would think that the pause you talk about would cause a blob of PLA to be placed on all models and that your modification of the G-code would fix this.

[@Tombof3DPrintedHorrors]

If you are new to 3D printing, I cannot recommend the Bambu Lab A1 Mini highly enough. It is a phenomenal printer.

[@fyed1021]

JUst bought my Ender V3 S3 and found this useful.

[@zzone5091]

This video helped me decide on ordering the printer. I’m going to save this video and follow your instruction. This will be my first fdm printer. I’m definitely subbing!!

[@chasonlapointe]

Great video, that second stringing test is perfect.

[@rossduples]

Thanks, no nonsense video with helpful tips

[@Mark-je8ns]

my first printer so at the moment soaking up all the info i can... thanks for these trouble shooting points!

[@Feeyoh]

just bought an ender 3 se and this helped me a bunch!

[@Wub892]

Ender 3v3 SE is now available in cura. Version 5.6.0

[@PatFriedl]

Fantastic stuff! There's so few videos that cover fine tuning and getting this working.

[@PaganWizard]

Well, I got some bad news. I DL'ed your bed leveling test print, and just to get a base line, I printed it without changing any of the stock settings, and the print quality was perfect. I then did the same print with your suggested settings, and the test print was again, perfect. With that, I printed a string retraction tower that I found on thingiverse, which was almost flawless. The little bit of stringing that it had was so fine that, walking from my printer to my desk, less than 10 feet, the stringing fell off from the breeze I created by walking. That's where the good news ends. I tried printing something, and it failed within the first maybe 10 layers. The print actually got caught up on the nozzle, and pulled up off the bed. I always ran PLA on my E5+ at bed temp 60, and nozzle temp at 200, so I set those temps in Cura 5.4, and left everything else alone. I then reset the printer back to original settings, and ran your bed leveling test print, and it looked good, so I tried printing the same file, and once again, the print failed within the first 10 layers, with the same results as the first failure. Now I am stumped with what appears to be a boat anchor for a printer. UPDATE.......I just printed the string retraction tower that I mentioned earlier with the printer's settings being all restored to original settings, gcode left alone so bed temp 200, nozzle is 60, and it turned out better than it did the first time. Obviously the piece that failed has a bed gcode. I'll mess with this some more tomorrow.

[@danfigurski4987]

I got the nevula pad cleaned my prints up so well

[@rubinhovk]

Your printer is clearly extruding too much material. Look at the top layer of that base. You can see some material being squished up between the roof lines. I'd suggest you calibrate the extruder before changing anything else. Also it could be mostly a Z offset problem, as you said. Changing movement speeds reduces automaticaly the filament extrusion speed and amount, which I think is the initial and main problem, above all others.

[@dware7777]

Thanks for the Video.. I'm about a month/200hrs of print time into my SE, and I'm having the same issues. Had even more issues with the Nebula Kit and switched back. The firmware on these machines still need a ton of work!

[@kerryg4466]

Did you feel that kit helped at all? And if you switched which other way did you network it? I have the nebula set up and I am having issues finding these settings.

[@dware7777]

@@kerryg4466 To me, it was really my only option at the time. It worked better than swapping SD cards. It seemed like the resolution was better..

[@kerryg4466]

@@dware7777 what screen are you using on your machine now?

[@dware7777]

@@kerryg4466 Original Screen with it directly plugged into my PC via USB-c

[@beyza.paksoy]

Really thank you so much. I wasted a lot of time until I found this video. Even though I haven't tried it yet, it made me happy. I will write my experiences here. Thanks again for the video and information :)

[@nicksmusic_]

thx buddy, fixed it riiight away !

[@SauROnmiKE]

You are a life saver! Excellent video, been banging my head on my desk for days now. New subscriber! (also I love your cute dragon)

[@snipa3d3]

mine is arriving tomorrow, cant wait

[@AaronBielik]

@Tombof3DPrintedHorrors Should I choose the Ender 3 V3 SE printer now that they have it available or stick with the Ender 3 v2? Also what version of Cura are you using in this video / what version of Cura should I be using ?

[@tophsterwaffles]

great vid, crazy that creality released such a solid printer for the price (got it for 160 on black friday) and half baked the firmware. still, love it so far, after adjusting this and some other settings it's great

[@scottmcdavid1370]

what other settings did you find helpful?

[@nathanaelsmith5661]

I would also like to know@@scottmcdavid1370

[@frankhovis]

Solid?? Push the top of the gantry and watch the whole printer flex.

[@mrleblanc187]

I love these videos and just enjoy

[@earlholyoak12]

I can’t wait to try theses settings

[@MisterClown]

Thank you for these. I am ignorant on 3D printing and I just got this printer.

[@krisztianseres3526]

You have my thanks! This video helped me a lot with my printer.

[@jk5270]

Very glad I watched this! Thanks Tomb

[@user-mx2mw6vo7i]

after doing the things in the video. Download his profile and put retraction on 1!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! this saved me! Thx man!!!!!!

[@carinrhodes6453]

Thank you so much for your explanations and instructions. You're awesome!

[@dj3stripes]

Running a test print now with your suggested settings. Thanks!

[@lquh]

How did it go

[@TripleFX]

Great tips. Very impressed by the set and forget nature of this printer so far.

[@cranmerc101]

Great video! Thanks for the info, as soon as I get my printer, I'll be doing this.

[@TheMysticSpade]

Got my V3 SE a couple days ago. Done several prints with the out of box settings with absolutely zero issue and no stringing. I run auto leveling first before any prints were done but that's it.

[@kobedde]

This video can avoid a lot of frustration. You have already earned my subscription. Thanks man.

[@robinhood1354]

I am sold, going to by a Ender 3 V3 SE next week, thanks

[@bready_9519]

when you say subscribe the subscribe button creates a satisfying ring around it. i subbed cus of that

[@bobrutz4424]

Hi Tom haven't seen your vids for a while,they helped me with my entry into 3d printing with my ender 3 pro,now got a ender 3 s1 pro and recently cr 10 smart pro. the old one is a dinosaur now so thanks m8

[@GlassCanvas]

Tom, Can you please tell us how is the printer time affected with these settings? Also, how do they differ between Cura slicer and Creality print? Thank you very much.

[@3DPRINTINGWITHLEE]

I have been using mine for about a month also and I have had great print quality with Creality print the speeds and the max acceleration have not been an issue, but what I did do was to create a better first layer but I did edit the first layer tiles And did a 12 point layer print you can do this under the same settings in motion and adjust the tiles

[@_DROM_]

You haven't noticed ringing with the 4k max acceleration in any of your models?

[@3DPRINTINGWITHLEE]

@@_DROM_ I’ve had pretty good results so far

[@noahscott6997]

just jumping back into 3d printing - been having issues with whispy "angel hair" strings - this was driving me up a wall.. mine were almost exactly like your firmware settings....adjusted them WAY down and messed with the profiles in cura and i only have a few whispy things now on the 2 towers retraction test... going to play around some more, but i'll take 2-3 whisps over the few dozen i had on a 2" part! :) thank you!

[@frankhovis]

Things may of changed, but from my experience of Cura it *doesn't* override the acceleration settings and will just go at whatever the firmware is set to. Prusha slicer does set its own based on what the settings in Prusha are set to. 4000 is stupidly way too high and is just set to make what is in effect a slightly upgraded Ender 3 design seem like the best thing since sliced bread. My own upgraded Ender 3 Pro runs at 2000 acceleration and around 500 speed and it produces beautiful prints, although the slicer sets a max speed of 150.

[@WernerKaffl]

I fixed it with changing retracting from 1.2 mm default to 5 mm. Regarding the acceleration, the V2 and the V3 are actually not really that similar. Creality themselves state that the V2 can, technically (and they explicitely say "technically") up to 200 mm/s, whereas the V3 can print 250 mm/s. The accelerations are actually meant to be higher. Nevertheless, changing those settings might solve the problem, but it may also reduce performance. Personally I will upgrade mine from Marlin to Klipper, installing the nebula pad instead of the old screen, this levels it up close to the V3 KE, improving print times and maybe getting rid of the little stringing I still have left on mine.

[@ayo3dprint]

[TRY THIS] hi, i just playing with the setting and i find that speed can be high. and all you need to set to make stringing disapear are : 1. set the retraction distance to : 5.5 - 6 mm 2. set the retraction speed to : 65 - 70 mm/s it work well for me with default acceleration at 4000 and default speed from ender 3v3 se. let me know if your stringing proble are solved.

[@frankhovis]

With retractions that long you're pulling molten filament up into the heat break. It'll block up quickly.

[@ayo3dprint]

​@@frankhovis I think so, but with the retraction speed it work like vacuum and make strings gone.. I run it about a week and nothing bad side effects, I will update later after a month and more